problems

[Pa.si]

good morning, I contacted you to ask for information about some analyzes. The modeling needs led me to model each node as the composition of several nodes connected together by the rigid element: the story is characterized by el_mat material with a modulus of elasticity equal to 1E15 and specific weight equal to 0. the problematic the main reason is that in the post-processor I am given disproportionate moment values ​​and cuts for those elements. sometimes the analysis stops due to convergence errors. I noticed that by reducing the size of these elements the analysis proceeds better. I was wondering if there is a reason for this problem

[seismosoft]

Why don't you use rigid links instead of elastic frame element with large stiffness? It will probably be more stable. Also make sure that you are not introducing 'impossible' conditions to the structure, i.e. trying to push a node away from another node, whilst these nodes are connected with rigid links.
Seismosoft Support